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  1. Behaviour of gilts before and at parturition after intensified human-animal contact, training to be driven, or exposure to a farrowing pen

    Contributor(s):: Brötje, Anska, Gygax, Lorenz, Hillmann, Edna, Wechsler, Beat

    During rearing and until first insemination, housing conditions of gilts are relatively constant and the few human-animal interactions negative. Around first parturition, however, gilts experience intensified contact with stockpersons and are subjected to new management procedures such as being...

  2. Behaviour of pre-pubertal gilts and its relationship to farrowing behaviour in conventional farrowing crates and loose-housed pens

    Contributor(s):: Ison, S. H., Wood, C. M., Baxter, E. M.

    Individual variation in the reproductive performance of sows has the potential for greater negative impacts in loose-farrowing systems. Therefore, the ability to select gilts that will perform well would be a major advantage. This study investigated the behaviour of gilts during pre-pubertal...

  3. Network characteristics and development of social structure of agonistic behaviour in pigs across three repeated rehousing and mixing events

    Contributor(s):: Buttner, K., Scheffler, K., Czycholl, I., Krieter, J.

    In commercial pig production, the mixing of unacquainted pigs is a standard procedure which leads to agonistic interactions with a wide range of individual pig behaviour. A reduction in these agonistic interactions positively affects animal health, welfare aspects and production parameters. With...

  4. Genetic analysis of the individual pig behaviour in backtests and human approach tests

    Contributor(s):: Scheffler, K., Stamer, E., Traulsen, I., Krieter, J.

    The most recent development in pig production has focused increasingly on the well-being of the individual pig and animal-friendly housing conditions, i.e. the launch of the group housing of sows in the EU. In this regard, however, standard procedures which may be stressful to the animals and...

  5. Aggressive behavior in two different group-housing systems for pregnant sows

    Contributor(s):: Chapinal, N., Ruiz-de-la-Torre, J. L., Cerisuelo, A., Gasa, J., Baucells, M. D., Manteca, X.

    The study housed 120 pregnant sows from Day 29 of pregnancy to 1 week before parturition either in groups of 10 with trickle feeding (TRICKLE) or in groups of 20 with an unprotected electronic sow feeding (FITMIX). The study recorded aggressive interaction on 11 nonconsecutive days. Frequency of...

  6. Differences in open field behavior between heterozygous and homozygous negative gilts for the RYR(1) gene

    Contributor(s):: Fabrega, E., Diestre, A., Font, J., Carrion, D., Velarde, A., Ruiz-de-la-Torre, J. L., Manteca, X.

    A test widely used to assess fear and novelty responses in domestic species is the open field. The aim of this study was to investigate the effect of RYR(1) genotype on open field behavior in growing pigs. The study subjected 15 heterozygous (Nn) and 15 RYR(1)-free (NN) gilts of 19 weeks of age...

  7. Effect of gestation management system on gilt and piglet performance

    Contributor(s):: Muns, R., Manzanilla, E. G., Manteca, X., Gasa, J.

    Individual gestation housing of pregnant sows in stalls from four weeks after mating is banned in the EU. Two experiments were conducted to study the effect of two gestation management and housing systems (STALL: gilts housed in stalls and PEN: gilts loose-housed in pens with increased feed...

  8. Nest building and posture changes and activity budget of gilts housed in pens and crates

    Contributor(s):: Andersen, I. L., Vasdal, G., Pedersen, L. J.

    The aim of the present work was to study nest building, posture changes and the overall activity budget of gilts in pens vs. crates. Twenty-three HB gilts (high piglet survival day 5) and 21 LB gilts (low piglet survival day 5) were video recorded from day 110 in pregnancy to four days after...

  9. Responses to novel situations of female and castrated male pigs with divergent social breeding values and different backtest classifications in barren and straw-enriched housing

    Contributor(s):: Reimert, I., Rodenburg, T. B., Ursinus, W. W., Kemp, B., Bolhuis, J. E.

    The growth of a pig is not only affected by its own genes, but also by the genes of its pen mates. This indirect effect on a pig's growth is represented as social breeding value (SBV) in a newly developed breeding model. It has been hypothesized that pigs could affect their pen mates' growth...

  10. Environmental enrichment induces optimistic cognitive biases in pigs

    Contributor(s):: Douglas, C., Bateson, M., Walsh, C., Bedue, A., Edwards, S. A.

  11. A note on the effect of gestation housing environment on approach test measures in gilts

    Contributor(s):: Marchant-Forde, J. N., Bradshaw, R. H., Marchant-Forde, R. M., Broom, D. M.

    Systems' welfare evaluation, including behavioural testing, is becoming increasingly popular in farm animal assurance schemes. The aims of this study were to investigate whether fairly short-term exposure to gestation housing systems, which varied in physical, environmental and human-input...

  12. Behavioural and physiological consequences of acute social defeat in growing gilts: effects of the social environment

    Contributor(s):: Ruis, M. A. W., Groot, J. de, Brake, J. H. A. te, Ekkel, E. D., Burgwal, J. A. van de, Erkens, J. H. F., Engel, B., Buist, W. G., Blokhuis, H. J., Koolhaas, J. M.

    Endocrine, behavioural and immunological processes, together with body growth, were evaluated in gilts that were defeated at 10 weeks of age in resident-intruder tests. Immediately after defeat, gilts were either separated from or reunited with a familiar conspecific (litter-mate; always a...

  13. Development of stereotypic behaviour in sows fed a starch diet or a non-starch polysaccharide diet during gestation and lactation over two parities

    Contributor(s):: Peet-Schwering, C. M. C. van der, Spoolder, H. A. M., Kemp, B., Binnendijk, G. P., Hartog, L. A. den, Verstegen, M. W. A.

    The effect of feeding sows a starch diet or a diet with a high level of fermentable non-starch polysaccharides (NSP) during gestation, lactation or both gestation and lactation over the first two parities on the development of stereotypic behaviour was studied in sows housed in groups during...

  14. Does the number of daily meals affect feeding motivation and behaviour of gilts fed high-fibre diets?

    Contributor(s):: Robert, S., Bergeron, R., Farmer, C., Meunier-Salaun, M. C.

    The feeding motivation and feeding-related stereotypies of pregnant gilts fed high-fibre (HF) or concentrate (C) diets in one or two daily meals were compared. 24 gilts were fed either a concentrate or high-fibre diet with the same daily intake of energy and major nutrients. The effect of the...

  15. Effects of floor-feeding and the presence of a foraging substrate on the behaviour and stress physiological response of individually housed gilts

    Contributor(s):: Leeuw, J. A. de, Ekkel, E. D., Jongbloed, A. W., Verstegen, M. W. A.

    Both restricted feeding and barren housing have a negative influence on sow welfare. The aim of this study was to test whether sows that have to search for their feed in a substrate on the floor show less stereotyped (and other abnormal) behaviour and have a lower physiological stress response....

  16. Evidence of a limited role for prolactin in the preparturient activity of confined gilts

    Contributor(s):: Rushen, J., Robert, S., Farmer, C.

    To investigate the role of peripheral prolactin in stimulating the preparturient activity of pigs, 12 cross-bred gilts housed in standard farrowing crates either received orally 10 mg of bromocriptine three times per day from day 110 of gestation or served as controls. Jugular blood samples were...

  17. Expression of rooting motivation in gilts following different lengths of deprivation

    Contributor(s):: Studnitz, M., Jensen, K. H.

    Outdoor sows may be provided with a nose ring in order to prevent them from uprooting the grass. Under semi-natural conditions, sows spend 10-20% of their active time rooting. The welfare consequences of this rooting deprivation depend on the motivation of the behaviour. This experiment examines...

  18. Implications of coping characteristics and social status for welfare and production of paired growing gilts

    Contributor(s):: Ruis, M. A. W., Brake, J. H. A. te, Engel, B., Buist, W. G., Blokhuis, H. J., Koolhaas, J. M.

    This paper considers the question whether knowledge on individual coping characteristics of growing pigs may be used to improve welfare and production after mixing. Gilts with either reactive or proactive coping characteristics were identified according to behavioural resistance in a backtest,...

  19. Oestrus and mating behaviour in gilts during boar induced puberty in relation to stress and housing

    Contributor(s):: Pedersen, L. J., Jensen, K. H., Giersing Linder, A.

    The effect of intermittent electroshock and individual vs. pair housing on sexual proceptive behaviour was studied in 48 large White x Danish Landrace gilts. In addition, the effect of intermittent electroshock on the behavioural response to boar stimulation and on sexual receptivity during first...

  20. Peri-partum posture and behaviour of gilts and the location of their piglets in lines selected for components of efficient lean growth

    Contributor(s):: McPhee, C. P., Kerr, J. C., Cameron, N. D.

    Peri-partum posture and behaviour of gilts from lines selected for different components of efficient lean growth were studied to determine if behavioural changes may have been associated with the observed responses in reproductive performance. The proportions of time that gilts expressed defined...